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云南省1982年已查出水稻害虫天敌333种,寄生性天敌189种,卵寄生天敌13种,其中赤眼蜂、黑卵蜂,啮小蜂等类群是寄生稻螟卵的主要天敌。经在玉溪、文山、红河,昆明等十三个地(州)县调查,一般稻螟赤眼蜂对螟虫卵块自然寄生率都在30%以上,有的第三代螟虫卵块寄生率高达95%。为了开发利用丰富的天敌资源,发挥卵寄生天敌控制害虫的作用,特参照省外经验,结合我省实际,1983年在螟害严重的玉溪市研和公社南广大队进行了利用卵寄生天敌保护器,发动群众采放害虫卵块,保护天敌控制螟害的试验,现将一年工作初报于下:
In 1982, 333 species of insect pests, 189 species of parasitoid natural enemies and 13 species of egg parasitized natural enemies were identified in Yunnan Province. Trichogramma, black egg bees and small wasps were the main natural enemies of parasitized rice borer eggs. In the survey of 13 prefectures (counties) in Yuxi, Wenshan, Honghe and Kunming, the natural parasitism rate of Trichogramma ostriniae on stem borers was above 30%, and some third-generation stem borer eggs were as high as 95% . In order to develop and utilize abundant natural enemy resources and play the role of egg parasitoids in controlling pests, we made reference to the experience of other provinces and the reality of our province. In 1983, , Mobilize the masses to pick pests eggs, pest control protection of natural enemies of the test, the first year of work are now reported in the next: